While going through the vignettes in a start-to-finish or continuous manner, one thing that may pose a mild inconvenience is navigating amongst the vignettes in order, also given that the statements toward the end of those connected vignettes (.N - 1) mention continuity (as in saying '... in the next vignette ...'), and could do with links to the next one.

Since there are none, the only way for the reader to follow along (as far as I am aware of) is to either navigate back to the wiki page if following that, or back to here if following the documentation hosted on gitlab.io (and then from the 'Vignettes' dropdown, proceed to select the next one, going below one step at a time). This back-and-forth flow can be avoided.

And if not following those two starting points (highly unlikely, but could be possible), the specific order to sequentially follow among the connected vignettes is usually absent in the order they are enlisted by common commands (vignette(package="data.table"), browseVignettes("data.table"), tools::getVignetteInfo("data.table")[,3], etc.), which may be a tad confusing for beginners as to which one to jump to next (admittedly a rare case).

But again, navigating back one page and then hopping to the next one would only work assuming the reader began reading the vignette inside a browser in the first place, as going through the material within an R session (by say using vignette("datatable-intro", package="data.table”) inside RStudio) would invalidate this hyperlink to stay within, and move to the browser instead (perhaps this was a part of the rationale to not link?), although again there would be no direct way to navigate to the next vignette, and in this case even to go back to the 'Getting started' wiki or landing page for the gitlab.io hosted documentation.

Thus, I think it might be beneficial to include hyperlinks for at least transitioning between vignette chapters for user-friendliness.